Rotary abrader brush adapter



Oct. 2, 1962 United States Patent O 3,056,158 RGTARY ABRADER BRUSH ADAPTER Winfield H. Davis, Taylor Road, Lewiston, Maine Filed Nov. 28, 1958, Ser. No. 776,799 2 Claims. (Cl. 15--181) The present invention relates to an adapter for aflixing rotary brushes in balanced relationship on a rotating spindle.

In the past, rotary abrading brushes have been aliixed to rotating spindles by means of adapters which lit into the rotary abrading brushes and which were adapted to be affixed to the particular dimension of the spindle. Greater width Iof abrading surface was obtained by the addition of further abrading brushes. Such prior adapting means did not take into `account the fact that in the manufacture of rotary abrading brushes, the shearing and distribution of bristle generally is not of such accuracy as provide an accurately balanced brush.

Lack of balance in rotary abrading brushes usually does not burden their effectiveness for ordinary use but where delicate Work is being done, brushes out of balance cause undesirable vibration. Vibration has been found particularly undesirable in the use of abrading brushes for cleaning eggs in preparing them for market. In such cases vibration causes increased breakage in the cleaning process and the vibration is often hard on the users hands.

Freshly laid eggs tend to become encrusted with offal which hardens on the shell surface and must be removed before marketing. Removal by washing is not completely satisfactory in removing the foreign matter and further washing decreases the ability for eggs to remain unused without spoilage. United States Patent #1,596,285 to Martin and United States Patent #1,730,157 are examples of prior devices for the cleaning of eggs.

The present invention adapts standard equipment for quick, economical egg-cleaning purposes, provides a wide abrading surface to abrade a large surface area of an egg at one time and allows for maximum utilization of the abrading tool itself with a minimum of breakage.

Elimination of vibration has been achieved in the past where more than one rotary abrasive brush has been used on `one spindle by balancing. Balancing is accomplished by manually adjusting by contra-rotation of the rotary abrasive brushes on the spindle until the brushes counterbalanced each other, then fixing the balanced brushes in such relationship to the rotating spindle.

In use, effectiveness of rotary abrading brushes decreases rapidly because of the wearing smooth of the cutting surface on the individual bristles. Additional life and effectiveness of such rotary abrading brushes is obtainable by reversing such brushes so that the opposite and unworn abrasive surface of the bristle is presented. Such second surface is not brought into use by single direction rotation of the rotary abrading brush.

Until the present invention, no adapter fixed balanced rotary abrasive brushes in their balanced position and held that position in use and permitted the removal and reversal of the balanced rotary abrasive brushes to bring the unused abrasive surface into use while still maintaining a balanced relationship between the already balanced brushes.

The object of the invention is to provide an adapter for rotary abrading brushes which may be attached and removed from a rotating spindle while maintaining a fixed balanced relationship between rotary abrading brushes.

Other objects and advantages of this invention, residing in the novel features of construction, arrangement and combination of parts, will become more apparent from the description of the specific embodiments hereinafter following. It will be understood that certain features of ICC the invention may be utilized other than in the entire arrangement disclosed.

The invention, however, is not intended to be -restricted to any particular construction or product, or any particular arrangement of parts, or any particular application of such construction or arrangement of parts, or any specific method of operation, or any of various details thereof, even where specifically shown and described herein, as the same may be modified in various particulars, or may be applied in many varied relations, without departing from the spirit and scope of the claimed invention, practical construction embodying certain details of the invention being illustrated and described, but only for the purpose of complying with the requirements `of the statutes for the disclosure of operative embodiments, but without attempting to disclose all of the various forms and modications in which the invention might be embodied.

Although such novel features as are believed to be characteristic in the invention are pointed out in the claims, the invention itself, as to its objects and advantages and the manner in which they may be carried out, may be better understood by reference to the description following and the accompanying drawings:

FIGURE l shows an exploded view of the adapter hubs with two rotary abrader brushes without connecting means between its hubs.

FIGURE 2 shows a center cross section of the rotary abrader brush adapter on a motor spindle with two rotar abrading brushes.

FIGURE 3 shows a partial side elevation of the rotary abrader brush adapter in use cleaning an egg.

FIGURE 4a shows an enlargement of a single unused bristle of a rotary abrader brush.

FIGURE 4b shows an enlargement of a single worn bristle of a rotary abrader brush.

Referring now to the figures in greater detail where like reference numbers denote like parts in the various figures:

The rotary abrader brush adapter shown in the embodiment set forth in the drawings comprises two hubs 1 and la. These hubs as shown are identical. Bolt holes 2 and 2a are provided to permit bolts 3 to pass between hubs l and la to rmly join the hubs to each -other with collars C of brushes B, engaging hub collars 4 and 4a. Bolt holes 2 and 2a are provided with countersinks 5 and 5a. Spindle holes 6 and 6a are adapted to receive a rotatable spindle S. Hubs 1 and 1a are attached to the spindle S by set screws '7 and 7a. The hubs 1 and la are fastened interconnected to each other by nutting bolts 3. The hubs l and la are provided with balances 8 and 8a.

The hubs d and as to themselves should be in balance so that the hub does not serve as a vibration source. Although the adapter hubs as shown are identical, the hubs as between themselves may be balanced by providing their set screws in opposition on hubs 1 and 1a.

n operation the outer sides of the rotary abrader brushes B are engaged with the inner lateral portions of adapter hubs vll and la as the collars of brushes B rest on collars 4 and 4a of hubs 1 and la. The inner lateral portions of the hubs l and la are at right angles to the collars 4 and 4a. The collars 4 and 4a extend transversely from the lateral portions of the hubs 1 and 1a which engage the sides of the brushes B. The individual brushes B are each unitary. The brushes B are manually balanced by trial and error testing. At the point where the abrader brushes are in vibrationless balance the bolts 3 are used to connect hubs l and la tightly to each other gripping the balanced abrader brushes B between the hubs It and ia so that there is no change in the relationship of the balanced brushes. The unit of abrader brushes and adapter can be removed and replaced on the spindle S without affecting balance by releasing the set screws 7 and 7a.

'Use of the invention as shown in FIGURE 3 upon thousands of eggslquickly Wears down the effectiveness of the rotary abrader brushes, the individual bristles lose much of their abrasive quality and become worn as shown in FIGURE 4. Surface 9 and 10 of the individual bristles as shown in FIGURE 4a are the cutting surfaces which abrade the eggs and remove the otlal on the surface of the egg. Rotation as shown in FIGURE 3 against the egg shell cause the individual bristles to Wear round. Surface 9 disappears and forms a new less effective surface 11, as shownin FIGURE 4b.

Extending the useful life of the abrader brushes themselves `may be accomplished by removing the balanced brushes and adapter from the'spindle S by releasing set screws V7 and 7a and reversing the brush and adapter unit on the spindle S' so that the unworn surface 10 as shown in FIGURE 4b now is ready to start afresh at abrading the egg surfaces to be cleaned.

' attaching the hubs to the spindle S is not intended to be by limitedscrew means.

The terms and expressions which are employed are used as terms of description and not of limitation, and there is no intention, in the use of such terms and expressions, of excluding any equivalents of the features shown and described or portions thereof, but it is recognized that vari ous modications are possible Within the scope of the invention claimed.

What is claimed:

l. A rotary abrader brush adapter for mounting a plurality of rotary abrader brushes each having a collar; including a first hub, said iirst hub including substantially radial attaching means adapted to attach said first hub to rotation means, a one piece lateral portion of said first hub for engaging one of said plurality of rotary abrader brushes, a portion of said hrsthub transverse to said lateral portion and adapted for engaging the inner circumferential collar of at least one rotary abrader brush; a second hub of like construction, permitting the attaching means of said second hub to be attached to said rotation means so that the second attaching means is located in substantially diametric opposition to said first hub attaching means; said transverse portions of said lirst and second hubs when in adjacent and operative position facing each other spanning approximately the total Width of the inner circumferential collars of the rotary abrader brushes mounted thereon; and means adapted to fasten said second hub to said first hub in coaxial relationship with said attaching means diametrically opposed for locking said plurality of rotary abrader brushes in place.

2. The rotary abrader brush adapter of claim 1 including balancing means adapted to balance said hubs.

References Cited in the le of this patent UNITED STATES PATENTS 649,290 Farnham May 8, 1900 1,904,042 Everts Apr. 18, 1933 1,976,380 Wilkinson Oct. 9, 1934 2,205,195 Hammon June 18, 1940 2,929,088 `Wier Mar. 22, 1960 FOREIGN PATENTS 117,183 Germany Dec. 16, 1899 894,922 Germany Oct. 29, 1953 

